期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
卷号：3
期号：8
页码：15201
DOI：10.15680/IJIRSET.2014.0308019
出版社：S&S Publications
摘要：Volatile Organic Compounds (VOCs) are the most common subsurface environment contaminants usuallyin the form of Non-Aqueous Phase Liquids (NAPL) through Leaking Underground Storage Tanks (LUSTs) and pipelines,accidental spills, land disposal sites, and industrial waste impoundments. VOCs are toxic, mutagenic and carcinogenic.Hence, VOCs in subsoil pose a serious threat of groundwater contamination. Organic compounds, owing to theirpersistence and volatility, present unique environmental problems in the vadose zone of soils. The uncertainty in transportmechanisms and subsoil environment pose a serious challenge in developing transport model for VOC compounds. Apartfrom advection and dispersion, VOC also undergo several complex chemical reactions such as adsorption, degradation,volatilization and ionic exchange. The transport mechanisms and transport modeling studies for VOCs are largely based onextensive field studies and relevant laboratory experiments. The focus here is to review the role of transport mechanismsand modeling aspects of organic compounds in petroleum fuels and other such liquids and liquid wastes that have thepotential to migrate through subsoil to groundwater and also to atmosphere by vapor diffusion.
关键词：VOCs; NAPL; Subsurface environment; Vadose zone; Transport mechanisms
